Stone crusher



1,485,955 c. A. BRAwN 1 STONE CRUSHER Filed Aug. 29. 1921 2 sheen-Snead March 4 1924.

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March 4, 1924.

C. A. BRAWN STONE CRUSHER Filed Aug. 29. 1921 2 sheds-sheet 2 -j wu f/l/x V////////////M//// Il f W Patented Mar. ffl, 1924.

CHARLES A. BRAWN, F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 BIRDSBORO STONE COMPANY, PHILADELPHIA, PENNSYl'JV'lllIA.v

STONE CRUSHER. l .f

Application filed August4 29, 1921. Serial No. 496,331.

tain new and useful Improvements in Stone,

Crushers, ofwhiclrthe following is a specivncation.

My invention'relates to stone Crushers and ic particularly to the means for suspending the shaft of the gyratory cone. l

In stone Crushers of the class wherein the `cone rotates upon a vertical axis, the upper end ofthe cone shaft is provi ded with a suspension bearing, and this includes an adjusting nut by means of which the shaft lmay be raised or lowered to adjust the cone with relation to the concave. The strain upon the parts in operation results in a mutilation of the threads so that it becomes diflicult to adjust said vnut or to remove the same.

The obj ect of my invention is to provide a suspension device for the cone shaft in which the above mentioned nut is eliminated, and by means'of which the cone may be adjusted as desired. Further objects of my invention are to provide a device as mentioned which shall be of simple construction, 30 which shall not readily get out of order,

and which may be easily and quickly operated to make the desiredadjustments. Other objects will appear hereinafter.

With these objects in view my invention consists generally in a split suspension collar arranged about the upper end of the cone shaft, a flange and groove connection between said collar and shaft, and means for maintaining said collar in position. My invention further consists in a device as mentioned in which said flange and groove connection is at a greater distance from one end of said collar than from the other, to the end that a mere reversal of the collar will vary the relation between the cone and groove. My invention also contemplates the employment of spacing rings upon which the suspension collar or its retaining ring rests, and in providing these rings of differ* ent thicknesses, so that further adjustments may be made by employing a ring of the desired thickness. My invention further consists in various details of construction, and in the combinations and arrangements of parts all as will be fully described hereinafter and particularly pointed out in the claim. v

j My invention will be more readily understood by reference to the accompanying drawings forming a part of this specification and in whichj v Fig. 1 is a detailv vertical section through a portion of a stone crusher, illustrating my invention applied thereto,

Fig. 2 is a horizontal sectiony on substan tially the line 2 2 of Fig. 1, upon an enlarged scale,

. ig. 3 is a detail vertical section Villustrating a modified form of the invention', and

Figs. 4 to 8 inclusive are similar views illustrating further modifications. y

Referring now to the drawings, and particularly to Figs. -1 and 2 thereof,`10 indicates a Crusher of the type wherein the cone 11 rotates upon a vertical axis. 12 indicates vthe cone shaft, the upper' end of which is provided with bearings in a supporting head 13. A supporting ring llis provided within the head 13 upon which rests a spacing ring 15. Surrounding the upper end of the shaft is a split collar 16 comprising similar halves 17 and 18. This collar rests upon the spacing ring 15 and supports the shaft 12, and to this end a flange and groove connection is provided between said collar and the shaft. As illustrated in Figs. 1 to 7 inclusive, the upper end of the shaft is formed with an annular groove 19, and the inner faces of the collar sections are provided with flanges (zo-operating therewith to support the shaft and permit rotation thereof. 21 indicates a retaining ring surrounding the split collar 16 and holding the parts thereof in operative position upon the end of thev shaft.` As illustrated in Fig. 1, the outer face of the collar 16 is tapered and the bore of the ring 21 is correspondingly shaped. In Fig. 3 I have illustrated a slight modification in which the adjacent face of the collar and retaining ring are cylindrical.

In Fig. 7 I have illustrated a further modification wherein the shaft is provided with two grooves 19 and 19, and the collar 16 with two corresponding flanges 20 and 20".

22 indicates a dust bonnet resting upon the head 13 to exclude dust from the bearings, and 23 indicates a hole therein, through which a bar or suitable instrument may be inserted for removing the same.

It will be noted in the forms of the device sol far described that the flange or anges are further removed from one different thicknesses, thereby raising orlowering the shaft 12.

In operatioin-tomzftke any adjustment, the dust bonnet is first removed vand an eye'bolt 24e is screwed into the upper end of the shaft and the shaft is lifted by means of' acrane orf-other suitable device. The ring Y 21 isremoved, Aafter which the split collar may be readily removed.- and reversed, and the retainingy `ring 21 replaced. {I f. further;

adjustment is rnecessary the spacing ring 15 may be removed and replaced by a similar .'vertical shaft in combination with a split 1 ring of greater or less thickness.

In Fig. 4 I have illustrated a further modification` wherein the retaining ring 21."

is provided at its lower edge with an inwardly extending flange 25 which extends beneath the-'collarV 16. vIn this form, the collar 16 is downwardly tapered'and the inner face of thering 21 is correspondingV ly shaped. It isobvious -that when this construction is employed, the' lcollar 16 cannot be reversed and adjustment istherefore made bymeans of the rings 15 of varying thicknesses.

In Figs. 57 6 and 8, I have illustrated a that the collar 16 is. tapered toward both .ends so that the collar may be reversed to Yshown in this figure, the shaft is provided with an annular flange 26 and the collar 16 is vformed wltha corresponding groove 27.

YVVitl-i. this construction, .I prefer to.. reduce the .diameter of the" upper end of. theY shaft 12 as indicated at 28. Otherwise, thiscon-Vv .struction isisimllar to that shown in Figs.

5 andA 6, but itpis obvious that-this reversal of the groove and flange construction lmay .also be `applied to the forms shown'inFigs.

lLand 3.

I claim: In'adevice of the class described, the

saidiconnection between said shaft and col- `.two subscribing witnesses.

CHAS. A. BRAWN. 1 Witnesses:

E. LAURENCE WEBSTER, GHAsJ. KRAUS, Jr. 

